Please, take your time! It won't be good for my conscience if the team suffered in the making of this game, haha. And, everyone agrees that a well-polished game is better than a rushed one. Waiting for a bit longer doesn't hurt ^^
Now, on to answering some questions~
1) Would you like to see more WIPs or just fully-shaded teasers?
Hmm, I feel like fully-shaded CGs and stuff should be a surprise we get to see in the actual product. So yeah, personally, I feel like fully-shaded ones practically counts as spoilers. Could be just me, though.
2) Will you be purchasing the DLC?
I have the habit of purchasing any side content of media I enjoy, so most likely! It's probably true for most people too, so work extra smart on the main game ^^)b
3) Would you be interested in watching a stream regarding the process to create the game? For example: streaming sketches, talking about the writing process, CGs, devs playing the game, etc. Let me know!
Oh, definitely! That's a great idea! It would be awesome to learn how 1st Degree is made. I'm a budding game developer myself (mainly in the art and writing department), so it'll also help me learn how these things go, haha.
4) If so, what platform do you prefer?
YouTube! Most people have YouTube, so I think it's the best platform out there for streaming and reaching a wider audience. I found your game through YouTube as well! It was a demo walkthrough. That's saying something, right?
With all that answered, I wish you all the best with your venture! Be sure to work smart and stay healthy! Cheers! ^v^)/